At 18-Watt, the new Intellibrite 5g Color Spa lights provide the most energy-efficient lighting ever. With IntelliBrite 5g Color Spa lights, combinations of individual colored LED"s are mixed and matched to achieve a vibrant spectrum of colors. These combinations are power sequenced to illuminate and cycle through colors at varying speeds, and in different sequences of color. With its custom reflector and unique lens design, the IntelliBrite 5g light is the brightest and most efficient underwater spa light available. In addition, Pentair’s Intellibrite Automated Controller is recommended for use with the Intellibrite color lights to allow light colors to automatically rotate.